The BlueSpot 52 Piece Socket Set is chrome plated and drop forged for increased durability. Includes sturdy plastic case for quick and convenient storage.Chrome plated and drop forged for increased durabilityIncludes sturdy plastic case for quick and convenient storage.Package Contents1/2" Drive Reversible Ratchet Handle. 3/8" Drive Reversible Ratchet Handle. 3" Extension Bar. 1/4" Drive Spinner Handle. 1/4" M x 3/8" F Adapter. 3/8" Drive Spin Disc. 1 Coupler. 21mm Spark Plug Socket. Phillips Bits: No 1, 2 & 3. Standard Bits: 3/6" & 9/32". 3/8" Drive 6pt. Sockets: 7/16", 9/16" & 1/2". 3/8" Drive 8pt. Sockets: 1/4", 5/16" & 3/8". 1/2" Drive 6pt. Sockets: 5/8", 11/16", 3/4" & 13/16". 1/4" Drive 6pt. Sockets: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 3/8", 13/32", 7/16", 15/32" & 1/2". 3/8" Drive 6pt. Sockets: 11, 12 & 13mm. 1/4" Drive 6pt. Sockets: 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10, 11, 12 & 13mm